Great to have these available. (at last!) Just that the line indeed doesn't look like suitable for human readers. Shouldn't these commands be prefixed with map-* ?

This brings out an interesting dilemma between enough features and usability via simplicity. If end-users are thrown at with such lines, they will most certainly be put off. On the other-hand this is very useful to have around, helps building the frontends a lot. Well, now that it's implemented I will not complain anymore. :)